package com.atguigu.eduservice.controller;


import com.atguigu.commonutils.R;
import com.atguigu.eduservice.entity.EduTeacher;
import com.atguigu.eduservice.entity.vo.TeacherQuery;
import com.atguigu.eduservice.service.EduTeacherService;
import com.atguigu.servicebase.exceptionhandler.GuliException;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StreamUtils;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import java.awt.print.Pageable;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * <p>
 * 讲师 前端控制器
 * </p>
 *
 * @author young
 * @since 2021-01-23
 */
@Api(description="讲师管理")
@RestController   //交给Spring管理和返回数据json
@RequestMapping("/eduservice/teacher")
@CrossOrigin
public class EduTeacherController {

    //注入service
    @Autowired
    private EduTeacherService teacherService;

    //1.查询讲师表中所有的数据
    @ApiOperation(value = "所有讲师列表")
   @GetMapping("findAll")
    public R findAllTeacher(){
       List<EduTeacher> list = teacherService.list(null);
       return R.ok().data("items",list);

   }

   //2，逻辑删除方法
    @ApiOperation(value = "逻辑删除讲师")
   @DeleteMapping("{id}")
    public R removeTeacher(@ApiParam(name = "id", value = "讲师ID", required = true)
                                 @PathVariable String id){
       boolean flag = teacherService.removeById(id);
       if (flag){
           return R.ok();
       }else{
           return R.error();
       }
   }


   //3.分页查询讲师方法
    @GetMapping("pageTeacher/{current}/{limit}")
    public R pageListTeacher(@PathVariable long current,
                             @PathVariable long limit){
        //创建page对象

        Page<EduTeacher> pageTeacher = new Page<>(current,limit);

        //----------------------------------------------------------
        //自定义异常

//        try{
//            int i =10/0;   //全局异常处理测试
//        }catch (Exception e){
//            //执行自定义异常，需要手动抛出
//            throw new GuliException(20001,"执行了自定义异常处理");
//        }

        //-------------------------------------------------------------

        //调用方法实现分页
        //调用方法的时候，底层封装，把分页所有数据封装到pageTeacher对象里面去
        teacherService.page(pageTeacher,null);
        long total = pageTeacher.getTotal();//总记录数
        List<EduTeacher> records = pageTeacher.getRecords();//数据list集合
 //第一种方式
        //return R.ok().data("total",total).data("records",records);
//用map
        Map map=new HashMap();
        map.put("total",total);
        map.put("rows",records);
        return R.ok().data(map);

    }

    //4.条件查询带分页的方法
    @PostMapping("pageTeacherCondition/{current}/{limit}")
    public R pageTeacherCondition(@PathVariable long current,
                                  @PathVariable long limit,
                                  @RequestBody(required = false) TeacherQuery teacherQuery){
        //创建page对象
        Page<EduTeacher> pageTeacher = new Page<>(current,limit);
        //构造条件
        QueryWrapper<EduTeacher> wrapper = new QueryWrapper<>();
        //wrap,多条件组合查询
        //mybatis 动态sql

        String name = teacherQuery.getName();
        Integer level = teacherQuery.getLevel();
        String begin = teacherQuery.getBegin();
        String end = teacherQuery.getEnd();
        //判断条件值是否为空，如果不为空拼接条件
        if (!StringUtils.isEmpty(name)){
            //构造条件
            wrapper.like("name",name);
        }
        if (!StringUtils.isEmpty(level)){
            wrapper.eq("level",level);
        }
        if (!StringUtils.isEmpty(begin)){
            wrapper.ge("gmt_create",begin);
        }
        if (!StringUtils.isEmpty(end)){
            wrapper.le("gmt_create",end);
        }
        //做一个排序
        wrapper.orderByDesc("gmt_create");
        //调用方法实现条件分页查询
        teacherService.page(pageTeacher,wrapper);

        long total = pageTeacher.getTotal();//总记录数
        List<EduTeacher> records = pageTeacher.getRecords();//数据list集合
        return R.ok().data("total",total).data("records",records);
    }

    //5、添加讲师接口
    @PostMapping("addTeacher")
    public R addTeacher(@RequestBody EduTeacher eduTeacher){
        boolean save = teacherService.save(eduTeacher);
        if (save){
            return R.ok();
        }else{
            return  R.error();
        }
    }


    //6.根据讲师id进行查询

    @GetMapping("getTeacher/{id}")
    public R getTeacher(@PathVariable String id){
        EduTeacher eduTeacher = teacherService.getById(id);
        return R.ok().data("teacher",eduTeacher);
    }

    //7.讲师修改功能
    @PostMapping("updateTeacher")
    public R updateTeacher(@RequestBody EduTeacher eduTeacher){
        boolean flag = teacherService.updateById(eduTeacher);//这个类里包含id
        if (flag){
            return R.ok();
        }else{
            return R.error();
        }
    }

}

